Apparatus for drawing coke-ovens.



4; SHEETS-SHEET 1.

PATENTED DEC. 12, 1905.

I. C. KELLY.

APPARATUS FOR DRAWING COKE OVENS.

APPLICATION FILED 1330.23, 190

INVENTOR 04W 4 flQ Zrm #1) WITNESSES. WWW mai No- 80'7,l18. PATENTED DEC. 12, 1905.

I. G. KELLY.

APPARATUS FOR DRAWING 00KB OVENS.

APPLICATION rum 1:30.23. 1904.

4 SHEETS-SHEET 2.

FiG. 10

WITNESSES. v INVENTOR. WW L A Md PATENTED DEC. 12, 1905.

I. C. KELLY. APPARATUS FOR DRAWING COKE OVENS.

APPLICATION FILED DEC. 23. 1904.

4 SHEETS-SHEET 3.

PWWW I H WHHQ I INVENTOR.

WITNESSES.

No. 807,118. PATENTED DEG. 12,1905. 1. 0. KELLY. APPARATUS FOR DRAWING COKE OVENS.

APPLICATION FILED DEU.23. 190k 4 SHEETS-SHEET 4 INVENTOR WITNESSES.

UNITED STATES PATENT OFFICE.

ISAAC c. KELLY, or SOOTTDALE, PENNSYLVANIA.

APPARATUS FOR DRAWING COKE-OVENS- Specification of Letters Ji'atent.

Patented Dec. 12, 1905.

Application filed December 23,1904. Serial No. 238,138.

To a, whom it may concern.-

, Be it known that 1, Isaac O. KELLY, a resident of Scottdale, in the county of VVestmoreland and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Drawing Coke-Ovens; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to apparatus for drawing coke-ovens.

The most common practice of drawing cokeovens at the present time is by means of a hand-tool. Attempts have been made to do this work by machinery, but not with entire success. The apparatus heretofore used has contemplated the use of either a large-sized scoop or shovel or a scraper or rake. The former is' liable to break down the lining of the coke-oven and the latter to tear away the sides or jambs of the door. Neither form of apparatus has proved successful.

The essential feature of my apparatus is a tongs for grasping the coke and drawing it out of the oven, thus largely avoiding the possibility of breaking down the lining of the oven or tearing away the door-jambs. In connection with such tongs I employ a scraper for removing the finer portions of coke which are left after the tongs have completed their work.

The invention also comprises an arrangement of mechanism whereby the tongs are automatically opened and closed as their carrier is reciprocated back and forth, also in details of fluid-pressure mechanism for actuating the tongs and scraper, and in various specific arrangements of mechanism, which will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a plan view of my drawing mechanism. Fig. 2 is a side elevation thereof. Fig. 3 is a vertical longitudinal section therethrough. Fig. 1 is a transverse vertical section through the center of the carriage. Fig. 5 is a side elevation, partly broken away, showing the means for rotating the drawing devices. Fig. 6is a vertical section through a portion of the carriage, showing the scraper mechanism partly in side elevation and partly in longitudinal section. Fig. 7 is a vertical section through the tongs-head. Fig. 8 is a section through the rear end of the main cylinder, showing the piston in side view. Fig. 9 is a transverse sectionthereof on the line 9 9, Fig. 8. Fig. 10 is a side elevation of the main valve. Fig. 11 is a vertical section therethrough. Fig. 12 is an end view thereof, partly broken away; and Fig. 13 is a horizontal section thereof on the line 13 13, Fig. 10.

The front wall of the coke-oven is indicated at 1, having a door at 2, and the bottom be,-

ing indicated at 3. These ovens may be of any of the forms now in'use.

In front of the battery of ovens is a track 4,011 which runs a car or carriage 5, carrying the drawing mechanism. Between this track and the front of the ovens will, if desired, be another track, upon which will be placed cars for receiving the coke from the ovens.

The' carriage 5 will be propelled along the track 4 in any suitable way, but preferably by means of a suitable motor mounted on the carriage. For this purpose I have shown an ordinary reversing-engine 6, whose connecting-rod 7 is joined to a crank-wheel 8 on a worm-shaft 9, the worm meshing with a wormwheel 10 on one of the axles of the carriage.

11 indicates a lever for starting, stopping, and reversing the engine 6. Any other suitable motor may be employed for propelling the carriage along the track 4:, or, if desired, a motor not mounted on the carriage might be used.

The carriage 5 is provided with a central bearing 13 for receiving a king-post 14, on which is secured a worm-wheel 15. Engaging the worm-wheel is a worm .16, mounted in suitable hangers on the table 17 This table is loosely mounted around the upper end of the king-post 14 and is supported on the carriage 5 by means of a series of antifriction-rollers 18. The worm 16 will be rotated by any suitable means, such as having its shaft connected, by means of a sprocketchain 19, with a hand-wheel 20, mounted in a stand 21 on the table 17 It will be obvious .that by turning the hand-wheel 2O rotary movement will be communicated to the worm l6, and as the latter is mounted on the table 17 and. meshes with the stationary wormwheel 15 the rotation of the worm will cause the table 17 to rotate about the king-post 14:. In this way the table can be swung to any position in a horizontal plane, so that the drawing mechanism. may be projected at an angle, and thus reach all portions of the oven-chambers at the sides of the doors.

Mounted on the turn-table 17 is the drawing mechanism which constitutes the principal feature of my invention. This consists of two cylinders-a main cylinder 22 for operating the tongs and a secondary cylinder 23 for operating the scraper. These cylinders are trunnioned at 24 and 25, respectively, in suitable bearings formed on the turn-table 17, so that they can be tilted to various angles from the horizontal. They are adjusted about their trunnions by means of screws 27 engaging the cylinders, and which screws are vertically movable by means of hand-wheels 28, having threaded hubs which engage the screws. Spiral springs 29 serve to hold these cylinders against the upper ends of the adjusting-screws 27. The main cylinder 22 is guided in this vertical movement by means of guidelugs or standards 30, secured to the table 17 and bearing against bosses 31 on the cylinder. If desired, the secondary cylinder 23 may be guided in the same manner. These cylinders may be actuated by any suitable fluid-pressure medium, but preferably by compressed air. The motive fluid will be received through a hose connection 33, which leads to the casings of the controlling-valves 34 and 35, the former controlling the main cylinder and the latter the secondary cylinder. Both of these Valves are mounted on the stand 21, and the former valve is controlled by the lever 36 and the latter by the lever 37, which is connected by a rod 38 to the short lever 39 on the valve-casing itself. The valves 34 and 35 may be any type of fourway valve. In Figs. to 13 the valve 34 is illustrated in detail. The valve is similar thereto, only smaller. The specific form of valve, however, is not essential, as any other form of four-way valve may be used.

From the valve 34 a pipe 40 leads to the outer end of the main cylinder .22, and another pipe 41 leads to the inner end of said cylinder. From the valve 35 apipe 42 leads to the outer end of the secondary cylinder 23, and another pipe 43 leads to the inner end thereof. The valves 34 and 35 are so arranged that when the actuating-levers are moved to one position motive fluid will be admitted to the outer ends of the cylinders and when the levers are moved to the opposite positions the motive fluid from the outer ends of the cylinders will be exhausted and motive fluid admitted to the inner ends thereof. This will be clear from an inspection of Figs. 10 to 13. The inlet-pipe 33 communicates with a central chamber 45 in the valve-casing. Leading from this central chamber are two ports, one port 47 being controlled by the puppet-valve 48 and the other port 49 being controlled by the puppet-valve 50. The port 47 communicates with a passage 51, which leads to the chamber 52 in communication with the pipe 40. The port'49 communicates with a chamber 53 communicating with a chamber 54, which is in communication with the pipe 41. From the chamber 52 exhaust-ports 55 lead to the atmosphere,-

'57 leads to the atmosphere and are controlled by the puppet-valve 58. The stems of the puppet-Valves 48 and 58 project upwardly through the valve-casing and are adapted to be actuated by a cross-head 60, while the stems of the puppet-valves 50 and 56 project downwardly through the valve-casing and are adapted to be actuated by a cross-head 61. The cross-heads 60 and 61 are attached to a rod 62, which in turn is connected to the actuating-lever 36.

When the lever 36 is depressed, the crosshead 60 will press the puppet-valves 48 and 58 downwardly, thus unseating the same. The puppet-valve 58 will allow the pipe 41 to exhaust to the atmosphere, while the puppetvalve 48 will admit fluid-pressure from the inlet-pipe 33, through the port 47, passage 51, and chamber 52 to the pipe 40. Upon raising the lever 36 the puppet-valves 48 and 58 will be closed by their springs and the puppet-valves 50 and 56 will be unseated. The opening of the puppet-valves 56'will exhaust the pipe 40 to the atmosphere, while the unseating of the puppetvalve 50 will place the inletpipe 33 in communication through the ports 49, passage 53, and chamber 54 with the pipe 41, thus admitting motive fluid to the opposite end of the cylinder. When the lever 36 is in its neutral position, all valves will be closed. It will thus be seen that by the movement of the lever 36 upwardly and downwardly motive fluid will alternately be admitted to and exhausted from the two ends. of the main cylinder. The valve 35 is exactly similar to the one described, and by operating the lever 37 motive fluid will be alternately admitted to and exhausted from the opposite ends of the secondary cylinder 23.

In the main cylinder 22 is a piston 65, to which is connected a hollow piston-rod 66, carrying at its outer end the drawing-head 67. The latter is essentially a tongs having a lower member 68, which will slide on the oven-bottom and which has fingers or prongs at its outer ends and with which cooperates the movable tongs-jaw 69. The latter is pivoted to the end of a link 70 and is actuated by means of a piston-rod 71, connected to a piston 72, working in a cylinder 73, secured to or formed in the head 67. The upper end of this cylinder is connected, by means of a pipe 74, with the opening in the hollow piston-rod 66. The lower end of the cylinder communicates, through a port 75, with a tube 76,

p which extends through the hollow piston-rod and through the piston 65, where it communicates with the ou ter end of the cylinder through port77. The interior of the hollow piston-rod communicates with the forwardend of the cylinder through port 78. The operation of this part is as follows: When motive fluid is admitted to the outer end of the main cylinder 22, it will pass through the port 77, tube 76, and

- grooves 81 in its outer surface.

'port 75 into the lower end of the cylinder 73, thus driving the piston in said cylinder upwardly and raising the tongs-jaw 69 to the position shown in dotted lines in Fig. 2. At the same time the fluid-pressure in the rear end of the main cylinder 22 will drivev the piston forward, thus projecting the tongshead into the oven. The cylinder 73, however, is smaller than the cylinder 22 and as a consequence will act somewhat quicker than the latter. The tongs-jaw 69 will therefore be raised slightly before the head begins to move into the oven. The operator will allow this movement to continue until the tongs has been projected into the oven a sufficient distance. He will then reverse the lever 36 and exhaust the fluid-pressure from the rear or outer end of the main cylinder and admit it to the forward end thereof. The fluid-pressure entering the forward end will pass through the port 78, hollow piston-rod 66, and pipe 74 into the upper end of the cylinder 73, thus forcing the piston downwardly and drawing the tongs-jaw 69 downwardly to grasp a quantity of the coke. At the same time fluidpressure in the forward end of the maincylinder will drive the piston 65 backwardly, thus drawing the tongs-head, with its load of coke, out of the oven. The smaller-sized piston 72, however, will operate more quickly than the main piston, so that the tongs will be closed onto the coke slightly before the outward movement begins. When the tongs has been withdrawn from the oven, it must be rotated in order to discharge the coke. This is accomplished automatically by the following means: To the piston 65 is secured a projecting cylinder 80, having helical cam- In the rear end of the main cylinder is a stationary or nonrotatable ring 82, carrying a series of gibs 83, which will engage the grooves 81 in the projection 80. The outer ends of the grooves 81 are flaring, as at 84, so that the gibs can readily enter the same. When the main piston moves backwardly, the projection 80 ent'ers the ring 82, and as the latter is non-rotatable the further backward movement of the main piston will cause the latter to turn, thus carrying with it the tongs-head 67 and giving the same a quarter-turn. so that the load of coke will fall out sidewise and be discharged. As soon as the load of coke is discharged the operator will again reverse the lever 36, thus-opening the tongs and again driving it into the oven and into thecoke. He will then again reverse the lever, causing the tongs to close and withdrawing the same from the oven, and as the tongs approaches the limit of its backward movement it will be given a quarter-turn to discharge the load of coke. This will be continued until all of the large pieces of coke are drawn from the furnace, the cylinder being given different inelinatious' in a horizontal plane by turning the hand-wheel 20 so as to reach all portions of the oven-chamber; The finer portion of the coke, which remains, is removed by means of the secondary cylinder 23.

In the cylinder 23 is a piston 87, the pistonrod 88 of which carries a blade 89 for scraping the finer'portions of coke out of the oven. By.-suitably operating the lever 37 the piston 87 is driven backward and forward in the cylinder, thus alternately projecting the scraper into the oven and drawing the same out. The sliding of this blade over the oven-bottom might injure the latter, and consequently it is desirable to slide the same into the furnace while riding on its heelthat is, while in the position shown in Fig. 6. Before drawing it out of the furnace the blade must be swung down sidewise, so as to engage the coke and draw it out. Consequently it is necessary to give said scraper a partial rotation before projecting it into the oven and again before drawing it out of the same. plished in various ways.

As shown-in the drawings, the blade 89 is keyed to the outer end of the piston-rod 88. The latter is square in cross-section and passes through a square hole in a bushing 90, rotatably mounted in the head 91 of the cylinder. To this bushing is secured a gear 92, which is engaged by a pinion 93 on a shaft 94, driven by bevel-gears 95 from an operating-shaft 96, provided with a hand-wheel 97 for turning the same. A stuffing-box 98 is used for packing the bushing 90 and another stuffing-box 99 for packing the piston rod. In working this scraper the operator will turn the hand-wheel 97 until the scraper is in the position shown in Fig. 6. He will then move the lever 37 so as to admit motive fluid to the outer end of the cylinder 23, thus driving the piston forward and projecting the scraper into the oven, the latter sliding over the bottom on its heel. When projected sufficiently far, the operator will turn the hand-wheel 97, so as to rotate the piston-rod and scraper 89 until the edge of the latter bears on the oven-bottom. He will then move the lever 37, so as to admit motive fluid to the forward end of the cylinder 23, thus drawing the scraper out of the oven and the fine coke with it. This will be repeated until all of thecoke is removed from the oven, the table 17 being turned by the hand-wheel 20, so that the scraper will reach all portions of the oven-chamber.

In the use of .my apparatus the carriage 5 will be moved in front of the oven to be drawn. The screws 27 will be adjusted so that the cylinders will project in line with the bottom of the oven. The operator will then first manipulate the lever 36 to cause the tongs-head 67 to be successively projectedinto the oven, the tongs closed, then drawn out of the oven, the load discharged, and the tongs opened and again driven into the oven, meantime rotating the table 17 from the hand-wheel 20, so as to This may be accom reach all portions of the oven-chamber. As soon as all of the coke which can be grasped by means of the tongs has been removed he will bring the secondary cylinder into play, using the scraper 89 in the manner above described to remove the remaining finer portions of the coke.

The operation of the mechanism described is largely automatic; To work the tongs, it is simply necessary to move the lever 36 up and down, the tongs being automatically opened and closed at the desired time and being given a quarter-turn after emerging from the oven in order to discharge the load. The scraper also is operated by merely moving the lever 37 up and down.

By means of the various adjustments described it is possible to reach all portions of the oven-chamber and to operate on ovens having their bottoms at different heights or inclinations. All of the operative parts namely, the levers 36, 37, and 11 and the hand-wheels 20 and 97are located close together Within reach of the operator, who stands upon the table 17. He can, therefore, without changing his position move the carriage from one oven to another and thoroughly clean out the ovens. The apparatus is such that no severe pressure will have to be brought upon the lining of the oven, thus doing away almost entirely with the liability of breaking down the lining thereof, and also there is little danger of tearing away the door-jambs.

Various modifications may be made in the details and arrangement of the mechanism without departing from the spirit of the invention.

What I claim is 1. In coke-drawing apparatus, the combination of tongs constructed to grasp the coke and hold the same, a carrier for said tongs arranged to alternately project the same into and draw-the same out of the oven, and automatically-operating mechanism for opening and closing said tongs.

2. In coke-drawing apparatus, the combination of tongs constructed to grasp the coke and hold the same, a carrierfor said tongs arranged to project the same into and draw the same out of the oven, and means arranged .to automatically close said tongs before the carrier begins its outward movement.

3. In coke-drawing apparatus, the combination of tongs constructed to grasp the coke and hold the same, a carrier for said tongs arranged to alternately project the same into and draw the same out of the oven, and automatically-operating mechanism arranged to close said tongs before the carrier begins its outward movement and to open said tongs on the inward movement of said carrier.

4. In coke-drawing apparatus, the combination of tongs constructed to grasp the coke and hold the same, a reciprocating carrier therefor, power mechanism for actuating said carrier, and automatically-operating mechanism for opening and closing said tongs.

5. In coke-drawing apparatus, the combination of tongs constructed to grasp the coke and hold the same, a reciprocating carrier therefor, power mechanism for actuating said carrier, and mechanism operated automatically from the reciprocating mechanism and arranged to open and close said tongs.

6. Incoke-drawing apparatus, the combination of tongs, a carrier therefor arranged to project the tongs into and draw the same out of the oven, and fluid-pressure means for opening and closing said tongs. 7. In apparatus for drawing coke-ovens, the combination of a tongs, a carrier therefor, fluid-pressure means for actuating said carrier, and fluid-pressure means for opening and closing said tongs.

8. In apparatus for drawing coke-ovens, the combination of a tongs, a carrier therefor, fluid-pressure means for reciprocating said carrier, and fluid-pressure means operated simultaneously with said reciprocating means for opening and closing said tongs.

9. In apparatus for drawing coke-ovens, the combination of a tongs, a power-cylinder having a piston-rod by which said tongs is carried, and mechanism for opening and closing said tongs.

10. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a pistonrod therefor, a tongs carried by said pistonrod, and mechanism arranged to automatically open said tongs before starting to move into the oven and for automatically closing said tongs before starting to move out of the oven.

' 11. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a pistonrod therefor, a tongs carried by said pistonrod, a fluid-pressure cylinder for opening and closing said tongs, and connections between the same and said power-cylinder.

12. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston therein, inlets to said cylinder on opposite sides of said piston, a tongs carried by the piston-rod, and a fluid-pressure cylinder having a piston for opening and closing said tongs, said last-named cylinder being connected on opposite sides of its piston to the main powercylinder on opposite sides of its piston.

13. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston therein, inlets to the cylinder on opposite sides of the piston, a hollow piston-rod connected to said piston and communicating with the main cylinder forward of the main piston, a tongs carried by said piston-rod, a cylinder for opening and closing said tongs, connections from one end of said last-named cylinder with the hollow piston-rod, a connection to the opposite end of said cylinder, a tube communicating with said connection and extending through the hollow piston-rod and communicating with the main cylinder to the rear of the main piston.

14. In apparatus for drawing coke-ovens, the combination of a tongs constructed to grasp the coke and hold the same, a power-actuated carrier therefor, and mechanism for automat-' ically opening the tongs when the carrier advances and for automatically closing the tongs when the carrier is withdrawn.

15. In apparatus for drawing coke-ovens, the combination of a drawing-head, a carrier therefor arranged to project the same into the oven and withdraw the same therefrom, and mechanism for automatically rotating said head when the carrier approaches the limit of its outward movement.

16. In apparatus for drawing coke-ovens, the combination of a drawing-head, a reciprocating carrier therefor, fluid-pressure means for actuating the same, and mechanism for automatically rotating said head when the carrier approaches the limit of its outward movement.

17. In apparatus fordrawing coke-ovens, the combination of a drawing-head, a reciprocating carrier therefor, and a non-rotatable member arranged to engage said carrier at the end of its outward movement, said carrier and member being provided with cooperating cam members, whereby said carrier will be rotated.

18. In apparatus for drawing coke-ovens, the-combination of a drawing-head, a powercylinder and its piston-rod to which said head is connected, and a non-rotatable member arranged to engage the piston of said powercylinder, said parts being provided with 00- operating cam members whereby said piston will be rotated.

19. In apparatus for drawing coke-ovens, the combination of a tongs, a reciprocating power-actuating carrier therefor, and a stationary member arranged to engage said carrier, said parts being provided with cooperating cam members whereby said carrier and tongs will be rotated.

20. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston and piston-rod therefor, a tongs carried by said piston-rod, a non-rotatable member, and a member moving with the piston and arranged to engage the non-rotatable member as the piston approaches the limit of its outward movement, said members being provided with cooperating cam-faces whereby the piston and tongs are rotated.

21. In apparatus for drawing coke-ovens, the combination of a scraper, a power-cylinder for reciprocating the same, and means for rotating said scraper about an axis parallel to the axis of said cylinder.

22. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston and pistonerod therefor, a scraper carried by said piston-rod, and mechanism for rotating said scraper about an axis parallel with said piston-rod.

23. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston and piston-rod therefor, a scraper attached to said piston-rod, and mechanism for rotating said piston-rod.

24. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston and piston-rod therefor, a scraper on the end of said piston-rod, a rotatable bushing in the end of said cylinder in which the piston-rod has a sliding but not a rotary movement, and means for rotating said bushing.

25. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston and piston-rod therefor, a scraper carried by said piston-rod, a gear connected to said scraper, a shaft mounted on said cylinder and having a pinion for engaging said gear, and means for rotating said shaft.

26. In apparatus for drawing coke-ovens, the combination of a power-cylinder, a piston and piston-rod therefor, a tongs carried by said piston-rod, trunnions on which said cylinder is mounted, and adjustable means hearing against said cylinder and arranged to tilt the same about said trunnions.

27. In apparatus for drawing cokeovens, the combination of a power-cylinder, a piston and piston-rod therefor, a tongs carried by said pistonrod, trunnions on which said power-cylinder is mounted,an adjusting means bearing against said cylinder to move the same about its trunnions, and a spring for holding the cylinder against said adjusting means.

28. In apparatus for drawing coke-ovens, the combination of a rotary table, a reciprocating power mechanism carried thereby, adjustable means engaging said power mechanism, and arranged to tilt the same and a tongs carried by said power mechanism.

29. In apparatus for drawing coke-ovens, the combination of a rotary table, a powercylinder trunnioned thereon, adjustable means engaging said power-cylinder and arranged to tilt the same about its trunnions, a piston and piston-rod for said power-cylinder, and a tongs connected to said piston-rod.

In testimony whereof I, the said ISAAC C.

' KELLY, have hereunto set my hand.

ISAAC C. KELLY.

Witnesses:

SADIE C. MCARDLE,

J ESSE S. Coox. 

